The first one is to be a very good sales, any experience, especially in management starts with sales, it is a position he must understand, sales is also the only department that brings benefits to the company!
The second is to know how to manage towards the management level, we all know that if you do not know how to manage, it is never okay, through the layers of assessment, your management ability to pass the words, then it is not far from the manager!
The third, some time is to let us more helpless place, that is the diploma! There are many more formal enterprises or companies to promote the conditions of one is essential, that is, a higher diploma!